Local Character Research Articles

Irradiance separation model parameter estimation from historical cloud cover statistical properties

Irradiance separation models allow the decomposition of Global Horizontal Irradiance into Diffuse Horizontal and Direct Normal Irradiances. These models need fitting to the irradiance characteristics of the location of interest using locally measured ground data. For locations that only measure Global Horizontal Irradiance, current state of the art establishes the use of parameters obtained for another location that measures the three components, with similar climate characteristics. Nevertheless, this results in a lack of localized character for estimates and requires fitting model parameters for all possible climates, which can be infeasible given data availability. This work presents a novel approach based on the hypothesis that the separation model's parameters are a function of the statistical properties of satellite-derived cloud cover estimates. The proposed methodology was evaluated in 23 sites covering all main Köppen-Geiger climatic types and different cloud coverage properties using the Boland-Ridley-Lauret diffuse fraction model. The model performs similarly as locally adjusting the model, with Root Mean Square Errors of 0.087–0.15 diffuse fraction units versus 0.077–0.127 for locally optimized parameters, and offers adequate performance across climates and cloud characteristics. These results encourage future research by generalizing parameter estimation for other diffuse fraction models. The main applications for this research are the estimation of irradiance components where no local data is available for model fitting and the enhancement or complementarity of satellite estimates of surface irradiance. Furthermore, it allows the estimation of missing irradiance components due to equipment failure in locations with insufficient data for a representative, locally adapted model.

Computational microfluidics of reactive transport processes with solid dissolution and self-induced multiphase flow

There are still many unclear mechanisms in the multiphase reactive flow with solid dissolution processes. In this study, the reactive transport processes coupled with solid dissolution and self-induced multiphase flow in three-dimensional (3D) structures with increasing complexity is studied by developing a 3D computational microfluidic method, which considers multiphase flow, interfacial mass transport, heterogeneous chemical reactions, and solid structure evolution. Solid dissolution diagram in a simple channel in the framework of multiphase flow is proposed, with six coupled multiphase flow and solid dissolution patterns identified and the transition between different patterns discussed. Then, multiphase reactive flow in a porous chip is further studied, and the interesting 3D phenomena are discovered, including enhanced solid dissolution in the middle and enriched bubble generation at the corner along the thickness direction. Considering the importance of reactive surface area, correlations of reactive surface area-porosity-saturation with different dissolution patterns are proposed based on the pore-scale results. Finally, the computational microfluidic model is extended to investigate the multiphase reactive flow in a 3D digital core. Different dissolution patterns are recognized using the local porosity evolution character, and the corresponding pore size distribution and bubble characteristics are deciphered. These findings advance understanding of multiphase reactive transport processes and contribute to improve continuum-scale reactive transport modeling.

Institutional model of commercial real estate market

The study considers institutions of the commercial real estate market with the aim to develop a descriptive institutional model. Institutional boundaries of the commercial real estate market are outlined. Time limits are determined by the equalization of supply and demand through the dynamics of rental rates. Geographical limits, despite the local character of the market, are determined by the participation of the largest developers. Commodity boundaries form the intended purpose of commercial real estate related to its use by lessees for business. This allows the interconnection of commercial real estate institutions to be considered from the perspective of value creation. By means of land relations, the initial conditions are determined by the institution of the state, which also establishes registration requirements. The developer connects the land supply with the rental market by developing a concept of the object, thus influencing related industries (developers, producers of construction materials). The institution of commercial real estate management ensures the interests of the developer. The composition of its participants is diverse, allowing the investor’s offer to be communicated to potential tenants as a value. The institute of accompanying participants of the commercial real estate market is mainly involved in information exchange between its other subjects; however, this institute is responsible for making the constituent links of the market sustainable. The lessee forms the final product using the value created by the developer (lessor) in the form of the intended purpose and individual properties of the object. Rental rates affect the profitability of commercial real estate, thereby determining the developer’s demand for capital. The results obtained can be used by both developers and researchers. The conclusion is made about the limited institutional role of the investor due to irrational capital raising and transferring these costs to the lessee. The reasons lie both in the strategies of most developers and in the desire to reduce risks through the preferred use of debt capital.

Strategy for strengthening local culture-based character education in class iii students at SDN Menanga 1

Character education based on local culture is values education, character education, moral education, and character education which aims to develop students' abilities to make good and bad decisions, maintain what is good according to their outlook on life and science. This is a challenge for the author to study more deeply. This research was carried out to answer the following problems: The theoretical basis of this research is character education theory by Thomas Lickona, social learning theory by Bandura and behaviourism theory by Burrus Frederic Skinner. The type of research is qualitative research with a phenomenological approach. The technique for determining informants uses purposive sampling. Data collection techniques include observation, interviews, literature study, documentation and using qualitative data analysis, namely data reduction, data presentation and verification or drawing conclusions.

Spatial patterns of European innovation: a spatial econometric approach with technological proximity weights

The paper deals with a spatial econometric analysis of 220 European regions. The analysis follows the Mixed Geographically Weighted Regression – Spatial Autoregressive approach. Patent applications were a proxy for innovation output. Instead of traditionally applied geographical proximity, the technological similarity was considered. The results supported the assumption of spatial differentiation of model parameters and indicated that regional innovation activities do not have only a local character in almost half of the regions. The region's technological similarity appears to be a significant factor stimulating innovation for regions that are not among the top innovators.

Nilai-Nilai Seni, Budaya, Dan Pendidikan Karakter Pada Cerita Rakyat Patih Sampun Asal Kabupaten Pemalang

Folklore is not only part of a region's cultural heritage, but also carries moral messages that are valuable for character education. One of the folk tales that is rich in artistic values ​​and character education is the legend of Patih Sampun from Pemalang Regency. This article aims to explore and analyze the artistic, cultural and character education values ​​contained in these folk tales. The research method used is analysis of the Patih Sampun folklore text based on aspects of narrative art, character traits and the moral message conveyed. The results of the analysis show that Patih Sampun's folklore contains various artistic values, such as the use of distinctive language, depictions of nature and local culture, as well as interesting plot developments. Apart from that, Patih Sampun's character as the main character shows qualities such as courage, wisdom and loyalty, which is a good example for character formation for the younger generation. The meaning implied in this article includes the importance of using folklore as a learning resource to educate children's character. By understanding the values ​​of art and character education contained in the Patih Sampun folklore, educators can integrate the story into the character education curriculum at school. This will help strengthen local cultural identity and shape strong character and integrity in future generations.

Quantum phase structural stability and switching in twist-graphenes

This study examines the electronic structure and potential energy surfaces of migration paths in various types of bilayer graphene. Using periodic boundary conditions, density functional theory (DFT), and the generalized gradient approximation (GGA) exchange–correlation functional, along with the nudged elastic band (NEB) method, to investigate the structural stability and dynamic equilibrium of twisted bilayer graphenes (TBGs) with twist angles of 13.2° and 21.8°. The results suggest that twist angles significantly impact atomic and electronic properties, including moiré patterns, superlattice periods, and interfragment distances, which in turn influence bilayer graphene strongly correlated electronic quantum states. This research elucidates the fundamental mechanisms of superlubricity and mutual migration pathways of graphene fragments in TBGs. The low migration barriers observed could facilitate transitions between different energy-related phases, which are determined by the lattice moiré patterns and the localization character of the electronic states, resulting in superlubricity. External mechanical factors may affect the quantum properties of TBGs, indicating potential applications in quantum computing and quantum sensing.

Does Aromaticity Play a Role in Electronic and Structural Properties of YBn (n=2-14) Clusters?

Nanoclusters exhibit electronic, optical, and magnetic properties that differ significantly from those of extended and molecular systems with comparable stoichiometries. In this work, we examined the structural, energetic, and electronic characteristics of yttrium-doped boron clusters (YBn, where n ranges from 2 to 14) with the aid of robust wavefunction analysis tools. Special emphasis is placed on the elucidation of the potential aromatic character exhibited by the resultant molecules and how it can affect their chemical bonding and stability. Our results revealed that the YBn stability is governed by the maximization of the ionic Y-B interactions. This circumstance is evidenced from the lowest-energy conformations, which manifest as half-sandwich structures wherein the majority of boron atoms are bonded to yttrium. The stabilization of such chemical contacts comes at the expense of a notorious depletion of the Y local electron density, crystallizing in a considerable ionic character, close to Y2++ . Such a prominent charge transfer is coupled to the enhancement of the electron delocalization within the Bn lattice, resulting in quite remarkable local and global aromatic characters. Altogether, this study shows how the toolkit of real space chemical bonding descriptors can offer valuable insights into the structural and electronic properties, along with the chemical bonding, of YBn clusters, contributing to a more comprehensive understanding of their behavior.

Symmetry Molecular Design Strategy for Highly Efficient Blue Electroluminescence with Hot Exciton Mechanisms

AbstractEmitters with a hot exciton mechanism are regarded as one of the most promising candidates for organic light‐emitting diodes (OLEDs). In this study, a deep‐blue emitter with the hot exciton mechanism is reported, namely 2An‐PCz, by integrating a pair of carbazole groups with a 9,9′‐bi‐anthracene nucleus. Owing to the symmetric molecular architecture and intrinsic local excited state character, multiple high‐lying reverse intersystem cross (hRISC) channels and large overlaps of frontier molecular orbits (FMOs) can be formed, facilitating rapid hRISC processes as well as enhancement of radiative transition rates simultaneously. Combined with the strong luminescence properties brought by the unique X‐packing mode, a high photoluminescence quantum yield of 60.5% is achieved in the non‐doped state. Strikingly, non‐doped deep‐blue OLEDs exhibited a maximum external quantum efficiency (EQE) of 10.50% with minimal efficient roll‐off, which is one of the highest values for deep‐blue organic light‐emitting devices based on hot exciton emitters thus far. The magneto‐electroluminescence (MEL) experiment and transient electroluminescence measurements corroborated that both the high EQE and suppressed efficiency roll‐off are attributable to the rapid “hot exciton” channels.

Regional Hydro-Chemistry of Hydrothermal Springs in Northeastern Algeria, Case of Guelma, Souk Ahras, Tebessa and Khenchela Regions

Hydrothermal units are characterized by the emergence of several large-flow thermo-mineral springs (griffons), each with varying temperature and physico-chemical characteristics depending on the point of emergence. It seems, however, that there is variability between the different systems, although it is not easy to characterize it because the variability within each system is high. The regional dimension of the chemical composition of thermal waters is, therefore, an aspect that has received very little attention in the literature due to the lack of access to the deep reservoir. In this study, we investigated the spatial variability, on a regional scale, in the characteristics of thermal waters in northeastern Algeria, and more specifically the hydrothermal systems of Guelma, Souk Ahras, Khenchela and Tébessa. Thirty-two hot water samples were taken between December 2018 and October 2019, including five samples of low-temperature mineral spring water. Standard physico-chemical parameters, major anions and cations and lithium were analyzed. The data were log-transformed data and processed via principal component analysis, discriminant analysis and unsupervised classification. The results show that thermal waters are the result of a mixture of hot waters, whose chemical profile has a certain local character, and contaminated by cold surface waters. These surface waters may also have several chemical profiles depending on the location. In addition to the internal variability in each resource, there are differences in water quality between these different hydrothermal systems. The Guelma region differs the most from the other thermal regions studied, with a specific calcic sulfate chemical profile. This question is essential for the rational development of these regional resources in any field whatsoever.

MARCAS E PROCEDIMENTOS DA POESIA POPULAR NA OBRA DE JOÃO CABRAL DE MELO NETO

João Cabral de Melo Neto built a poetry project that does not separate the exercise of the poem from the forms of expression of social reality and the ways of life of his community. The poet avoided talking about himself and his individuality to give way to popular stories of local characters and the needs of the community with which he identified. The objective of this work is to understand the identification that Cabral presents with popular poetry through the analysis of traits, forms and procedures of this poetry present in his work. Descriptions, comments and analyzes of some aspects of João Cabral's poems were made, in which the resumption of popular poetry procedures is perceived, such as strophic, metric and rhymic structure; presence of synalepha; narrative and dramatic nature of the verses. To support this study, works by critics of Cabral's poetry were consulted, such as João Alexandre Barbosa, Benedito Nunes, Luiz Costa Lima, Ángel Crespo, Antonio Carlos Secchin and studies on popular poetry by Segismundo Spina and João Miguel Manzolillo Sautchuk.

Aromaticity in Semi-Condensed Figure-Eight Molecules.

Electron delocalization and aromaticity was comparatively evaluated in recently synthesized figure-eight molecules made of two condensed U-shaped polycyclic aromatic hydrocarbon moieties connected either by two single bonds or by two para-phenylene groups. The selected examples include molecules that incorporate eight-membered and sixteen-membered rings, as well as a doubly [5]helicene-bridged (1,4)cyclophane. We probe whether some electron delocalization could occur through the stereogenic single bonds in these molecules: Is aromaticity purely (semi-)local, or possibly also global in these molecules? It was concluded that the situation can go from a purely (semi-)local character when the dihedral angle at the connecting single bonds is large, such as in biphenyl, to a predominantly (semi-)local character with a minor global contribution when the dihedral angle is small, such as in the para-phenylene connectors of the [5] helicene-bridged cyclophane.

Aromatic Rules of C22H122+/2•/2-: Flexibility in Electronic Structures of 2D Superatomic Molecules.

Triangulene (C22H122•), a nonclassic non-Kekulé polycyclic aromatic hydrocarbon, is identified to be aromatic by structural and magnetic criteria. However, its aromatic origin remains confusing. Herein, the aromatic rules of C22H122• and its two charged counterparts C22H122+/2- were investigated on the basis of a recently developed two-dimensional (2D) superatomic-molecule theory. [C22H12]2+/2•/2- exhibit obvious local aromatic characters and can be regarded as [◊N3◊O3]+, [◊N3◊O3]-, and ◊N3◊F3 superatomic molecules, respectively, where ◊N, ◊O, and ◊F denote 2D superatoms bearing 3π, 4π, and 5π electrons. [C22H12]2+/2- realize electronic shell closure via superatomic lone pairs and covalent bonds, mimicking simple molecules, whereas the α-π and β-π electrons in C22H122• follow the superatomic bonding patterns of C22H122- and C22H122+, respectively. Furthermore, based on the local character in 2D superatomic molecules, a doped nanoporous graphene, namely, C9N12B monolayer, was predicted. The material possesses excellent dynamical and thermodynamical stability, as well as a wide band gap of 2.77 eV, positioning it as a promising 2D material for future electronic applications.

Multiple Construction of Nanjing s Aesthetic Image in Geo-cultural Context -- Nanjing elements in film and television drama works as an example

As a renowned historical and cultural city, Nanjing boasts a rich cultural heritage and unique humanistic landscapes. In recent years, numerous film and television dramas have been filmed in Nanjing. These works, with their diverse aesthetic styles and visual symbols, have fully displayed Nanjing s geo-cultural traits and distinctive elements, crafting a spatial aesthetic imbued with Nanjing s local character. These dramas vary in their aesthetic portrayal of Nanjing s humanistic landscapes and geography, collectively creating a colorful and multifaceted visual space that contributes to the construction of Nanjing s aesthetic image.

History of the use of chemical weapons for military purposes and the possibility of their current use

Throughout the history of mankind there have been many wars of both local character and large-scale wars. At the heart of military actions necessarily lies the use of weapons, one type of which is chemical. Chemical weapons, the basis of which are diverse in their effect on the body and chemical composition of poisonous substances, began to be used for military purposes during World War I, namely, the first use occurred on April 22, 1915 in Belgium near the city of Ypres. Germany used gas cylinders filled with chlorine in this attack. The man who created this weapon was German chemist Fritz Haber, who became known as the "father of chemical weapons". Since that time, scientists from different countries began to actively study the effect of poisonous substances on the human body, synthesize their new types, as well as search for reliable means of protection against its effects. Throughout history, attempts have been made to ban the use of chemical weapons. In particular, after the end of the First World War, the Geneva Protocol was adopted in 1925, prohibiting the use of asphyxiating, poisonous or other similar gases in war. However, this agreement failed to limit the use of poisonous substances, which led to their further use, mainly in localized wars. Much work on the prohibition and destruction of chemical weapons belongs to the Organization for the Prohibition of Chemical Weapons, established in 1997 after the adoption of the Convention on the Prohibition of the Development, Production, Stockpiling and Use of Chemical Weapons and on Their Destruction in 1993. The purpose of this paper is to summarize the history of chemical weapons for military purposes, as well as to study the activities for their prohibition. Literary data of recent years on the history of creation, use of chemical weapons and international legal agreements on their prohibition and destruction, the main types of toxic substances, means of protection against their effects are analyzed. Conclusions are made about the possibilities of chemical weapons use at present.

Validity and practicality of ethnovlog media on the production of typical Riau smoked fish (salai) as a science learning media

Scientific studies on vlogs, ethnosciences, and social media literacy are current studies. A study on the development of ethno-vlog that raises local character and can be used as a learning medium is crucial. This study aims to develop a valid and practical ethno-vlog on the production of typical Riau smoked fish (salai fish) as a science learning media, especially in food preservation studies. The research is development research using a 4D development model (Define, Design, Develop, Disseminate). The ethno-vlog validity is carried out by disseminating questionnaires to 5 validators from three universities, namely Universitas Lancang Kuning, Universitas Negeri Padang, and Universitas Negeri Semarang, whereas the ethno-vlog practicality was conducted by three lecturers and 27 students of prospective Biology teachers at Universitas Lancang Kuning, Indonesia. The feasibility test results in that the ethno-vlog of food preservation in the production of typical Riau salai fish is valid and practical to be used as a learning media of food preservation for students of prospective Biology teachers at Universitas Lancang Kuning, Indonesia.

Investigation of magnetic exchange interactions in Cr-doped Ca0.5Sr0.5RuO3

The value of Curie temperature (T C) and resistivity for Ca0.5Sr0.5Ru1−xCrxO3 are found to increase with increase in x from 0 to 0.1. The T C increases from 38 K to 107 K. In this work, we investigate the increment using spin polarised density functional theory. The compounds exhibit Griffiths phase. Our results show that to understand the behaviour of the increase in T C , it is important to consider not only the competing super exchange and super–super exchange interactions between Ru/Cr–Ru/Cr ion pairs but also the increment in the value of the magnetic moment due to the localized character of the dopant (Cr) ion. Our results suggest that the increased resistivity with Cr doping could be due to increased scattering rate and strong on-site coulomb repulsion due to Cr doping. It is also important to note that the behaviour of T C with the Ru–O–Ru bond angle is not in line with the functional form reported for ferrites, chromites and some ferromagnetic oxides. We believe that our results will be helpful in further exploring the origin of magnetism and transport on Cr doping in perovskite ruthenates.

Sistem Pendidikan Islam Dalam Membangun Karakter: Evaluasi Program Ajengan Masuk Sekolah Di Pangandaran

The evaluation explored how the Pangandaran local government played a key role in the implementation and development of the programme, and its impact on students' character development. Data analysis from interviews conducted with the regent, MUI chairperson, school principal, religion teacher, students, ajengan aimed to understand the policy and integration of character education values into the school curriculum. This programme is very interesting because it involves ajengan or religious leaders in the learning process, providing a spiritual and moral dimension to education. This research provides insights into the strategies and challenges in running the AMS programme, as well as its contribution to character education in the school environment. The results provide a valuable understanding of the dynamics and effectiveness of local government-initiated character education programmes.

Enhancing Fast RISC in Hot‐Exciton Thermally Activated Delayed Fluorescence Emitter Through Fused Ring Modification: A Theoretical Insights

AbstractRecent progress has shown promising advancements in enhancing the Reverse intersystem crossing (RISC) process between high‐energy triplet states (Tn, n ≥ 1) and radiative singlet states (Sm) through the utilization of the classic D‐A‐D' strategy. In this study, 12 molecules employing phenyl carbazole and a peripheral phenanthroimidazole as the donors and fused cores as acceptors are theoretically designed. Additionally, electron‐withdrawing groups such as fluorine and cyano, as well as electron‐donating group like methoxy, are incorporated into anthracene, napthaoxadiazole, and napthothiadiazole derivatives, acting as fused core components. Theoretical analyses reveal that among the molecules examined, eight adhere to the three golden principle rules, demonstrating a large energy gap between S1‐T1, the minimal ΔES1‐T2, and large T2‐T1. Additionally, these molecules exhibit significant Spin‐orbit coupling (SOC) and maintain a strong Hybridized local and charge transfer (HLCT) character, facilitating the fast hRISC from T2 to S1. The auxiliary inclusion of heteroatoms, such as oxygen and sulfur, on the anthracene core, aligns with the prerequisite strategy, ultimately reinforcing the SOC. Furthermore, replacing the methoxy group on the Nz bridge significantly enhances the SOC, resulting in a substantial increase in the hRISC rate (10 +08 s−1). Overall, the findings substantially elevate the photophysical attributes of the designed molecules through the utilization of the hRISC channel.

Quantum Mechanical Versus Polarizable Embedding Schemes: A Study of the Xray Absorption Spectra of Aqueous Ammonia and Ammonium.

The X-ray absorption spectra of aqueous ammonia and ammonium are computed using a combination of coupled cluster singles and doubles (CCSD) with different quantum mechanical and molecular mechanical embedding schemes. Specifically, we compare frozen Hartree-Fock (HF) density embedding, polarizable embedding (PE), and polarizable density embedding (PDE). Integrating CCSD with frozen HF density embedding is possible within the CC-in-HF framework, which circumvents the conventional system-size limitations of standard coupled cluster methods. We reveal similarities between PDE and frozen HF density descriptions, while PE spectra differ significantly. By including approximate triple excitations, we also investigate the effect of improving the electronic structure theory. The spectra computed using this approach show an improved intensity ratio compared to CCSD-in-HF. Charge transfer analysis of the excitations shows the local character of the pre-edge and main-edge, while the post-edge is formed by excitations delocalized over the first solvation shell and beyond.